Use longer timeout for scan prewarm

tests/test_deployment_runtime_config.py

@@ -72,7 +72,15 @@ def test_scan_terminal_backend_timeout_returns_before_next_proxy_abort():
 
     assert 'POLYWEATHER_SCAN_TERMINAL_PROXY_TIMEOUT_MS || "18000"' in route_source
     assert '"POLYWEATHER_SCAN_TERMINAL_BUILD_TIMEOUT_SEC",\n    10,' in config_source
+    assert (
+        '"POLYWEATHER_SCAN_TERMINAL_PREWARM_PAYLOAD_TIMEOUT_SEC",\n    30,'
+        in config_source
+    )
     assert scan_terminal_config.SCAN_TERMINAL_BUILD_TIMEOUT_SEC <= 30
+    assert (
+        scan_terminal_config.SCAN_TERMINAL_PREWARM_PAYLOAD_TIMEOUT_SEC
+        >= scan_terminal_config.SCAN_TERMINAL_BUILD_TIMEOUT_SEC
+    )
 
 
 def test_probability_engine_uses_enriched_multi_model_snapshot():

tests/test_web_observability.py

@@ -2301,8 +2301,8 @@ def test_scan_terminal_timeout_does_not_replace_better_cached_snapshot(monkeypat
 def test_scan_terminal_prewarm_builds_default_terminal_payload(monkeypatch):
     calls = []
 
-    def _fake_build(filters, *, force_refresh=False):
+    def _fake_build(filters, *, force_refresh=False, timeout_sec=None):
-        calls.append((dict(filters), force_refresh))
+        calls.append((dict(filters), force_refresh, timeout_sec))
         return {"rows": []}
 
     monkeypatch.setattr(
@@ -2312,8 +2312,9 @@ def test_scan_terminal_prewarm_builds_default_terminal_payload(monkeypatch):
     )
 
     assert scan_terminal_service._warm_scan_terminal_payloads() == 1
-    filters, force_refresh = calls[0]
+    filters, force_refresh, timeout_sec = calls[0]
     assert force_refresh is False
+    assert timeout_sec == scan_terminal_service.SCAN_TERMINAL_PREWARM_PAYLOAD_TIMEOUT_SEC
     assert filters["scan_mode"] == "tradable"
     assert filters["min_price"] == 0.05
     assert filters["max_price"] == 0.95

web/scan_terminal_service.py

@@ -16,6 +16,7 @@ from web.services.scan_terminal_config import (
     SCAN_TERMINAL_BUILD_TIMEOUT_SEC,
     SCAN_TERMINAL_MAX_WORKERS,
     SCAN_TERMINAL_PAYLOAD_TTL_SEC,
+    SCAN_TERMINAL_PREWARM_PAYLOAD_TIMEOUT_SEC,
 )
 from src.data_collection.city_registry import ALIASES
 from web.scan_terminal_cache import (
@@ -101,11 +102,17 @@ def _build_scan_terminal_payload_uncached(
     filters: Dict[str, Any],
     *,
     force_refresh: bool = False,
+    timeout_sec: Optional[float] = None,
 ) -> Dict[str, Any]:
     cached_entry = get_scan_terminal_cache_entry(filters) or {}
 
     try:
         city_names = list(CITIES.keys())
+        build_timeout_sec = float(
+            timeout_sec
+            if timeout_sec is not None
+            else SCAN_TERMINAL_BUILD_TIMEOUT_SEC
+        )
         timezone_offset = filters.get("timezone_offset_seconds")
         if timezone_offset is not None:
             target_tz = int(timezone_offset)
@@ -145,7 +152,7 @@ def _build_scan_terminal_payload_uncached(
             try:
                 completed = as_completed(
                     future_map,
-                    timeout=float(SCAN_TERMINAL_BUILD_TIMEOUT_SEC),
+                    timeout=build_timeout_sec,
                 )
                 for future in completed:
                     city_name = future_map[future]
@@ -160,8 +167,7 @@ def _build_scan_terminal_payload_uncached(
             except FutureTimeoutError:
                 timed_out = True
                 timeout_message = (
-                    f"scan terminal build timed out after "
+                    f"scan terminal build timed out after {build_timeout_sec:g}s"
-                    f"{SCAN_TERMINAL_BUILD_TIMEOUT_SEC}s"
                 )
                 failed_reasons.append(timeout_message)
                 for future, city_name in future_map.items():
@@ -361,7 +367,11 @@ def _warm_scan_terminal_payloads() -> int:
     ok = 0
     for filters in _scan_terminal_prewarm_filters():
         try:
-            _build_scan_terminal_payload_uncached(filters, force_refresh=False)
+            _build_scan_terminal_payload_uncached(
+                filters,
+                force_refresh=False,
+                timeout_sec=SCAN_TERMINAL_PREWARM_PAYLOAD_TIMEOUT_SEC,
+            )
             ok += 1
         except Exception as exc:
             logger.warning("scan terminal payload pre-warm failed: {}", exc)

web/services/scan_terminal_config.py

@@ -35,6 +35,12 @@ SCAN_TERMINAL_BUILD_TIMEOUT_SEC = _env_int(
     min_value=8,
     max_value=30,
 )
+SCAN_TERMINAL_PREWARM_PAYLOAD_TIMEOUT_SEC = _env_int(
+    "POLYWEATHER_SCAN_TERMINAL_PREWARM_PAYLOAD_TIMEOUT_SEC",
+    30,
+    min_value=10,
+    max_value=120,
+)
 SCAN_TERMINAL_MAX_WORKERS = _env_int(
     "POLYWEATHER_SCAN_TERMINAL_MAX_WORKERS",
     8,